Datasheet

LTM4614
2
4614fb
pin conFiguraTionabsoluTe MaxiMuM raTings
V
IN1
, V
IN2
, PGOOD1, PGOOD2 ...................... –0.3V to 6V
COMP1, COMP2, RUN/SS1, RUN/SS2
FB1, FB2,TRACK1, TRACK2 ......................... –0.3V to V
IN
SW1, SW2, V
OUT1
, V
OUT2
.............. –0.3V to (V
IN
+ 0.3V)
Internal Operating Temperature Range
(Notes 2, 3) ............................................ –40°C to 125°C
Storage Temperature Range .................. –55°C to 125°C
Body Temperature, Solder Reflow ......................... 245°C
(Note 1)
LGA PACKAGE
144-LEAD (15mm × 15mm × 2.82mm)
TOP VIEW
1 2 3 4 5 6 7 8 109 11 12
L
K
J
H
G
F
E
D
C
B
M
A
GND1
GND2
SW1
V
OUT2
V
OUT1
V
IN1
V
IN2
RUN/SS1 FB1
COMP1TRACK1
COMP2TRACK2
PGOOD1
SW2
RUN/SS2 FB2PGOOD2
T
JMAX
= 125°C, θ
JCbottom
= 2-3°C/W, θ
JA
= 15°C/W, θ
JCtop
= 25°C/W, θ Values Determined
Using a 4-Layer 95mm × 76mm PCB, Weight = 1.7g
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN(DC)
Input DC Voltage
l
2.375 5.5 V
V
OUT(DC)
Output Voltage C
IN
= 22µF, C
OUT
= 100µF, R
FB
= 5.76k
V
IN
= 2.375V to 5.5V, I
OUT
= 0A to 4A (Note 4)
0°C ≤ T
J
≤ 125°C
l
1.460
1.45
1.49
1.49
1.508
1.512
V
V
V
IN(UVLO)
Undervoltage Lockout Threshold I
OUT
= 0A 1.6 2 2.3 V
I
INRUSH(VIN)
Input Inrush Current at Start-Up I
OUT
= 0A, C
IN
= 22µF, C
OUT
= 100µF, V
OUT
= 1.5V
V
IN
= 5.5V 0.35 A
I
Q(VIN)
Input Supply Bias Current V
IN
= 2.375V, V
OUT
= 1.5V, Switching Continuous
V
IN
= 5.5V, V
OUT
= 1.5V, Switching Continuous
Shutdown, RUN = 0, V
IN
= 5V
20
35
7 12
mA
mA
µA
The l denotes the specifications which apply over the full internal
operating temperature range (Note 2), otherwise specifications are at T
A
= 25°C. V
IN
= 5V unless otherwise noted. Refer to Figure 1.
Specified as each channel (Note 5).
LEAD FREE FINISH TRAY PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE (Note 2)
LTM4614EV#PBF LTM4614EV#PBF LTM4614V
144-Lead (15mm × 15mm × 2.82mm) LGA
–40°C to 125°C
LTM4614IV#PBF LTM4614IV#PBF LTM4614V
144-Lead (15mm × 15mm × 2.82mm) LGA
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
orDer inForMaTion
(See Pin Functions, Pin Configuration Table)